12V dc - 220V ac converter
CMOS 4047 is the main component of this small converter wich transforms a 12V dc into 220V ac. 4047 is used as a astable mutivibrator, at pins 10 and 11 will have a symmetrical rectangular signal wich is amplified b 2 Darlington transistors and finally reach the secondary coil of mains transformer ( 2×10V / 60VA ).
At the main coil terminals will get 220V. With the help of P1 the output frequncy can be adjusted between 50Hz to 400Hz.
12 V dc - 220 V ac inverter schematic:
Related Schematics
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